ICASTER: MAYA PLUGIN FOR DIRECT RENDERING OF IMPLICIT SURFACES ON THE GPU
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COMMAND LINE OPTIONS BUILD SYSTEM
---------------------------------
- debug_fbo : render to fbo and readback values (see isphere_ui_shading.cpp
  for details)
  - Both, rendering to FBO and rendering into the back buffer is performed
    every frame so that visual feedback is available.

TODO
----
- Draw bounding box using triangle strips.
- Arbitrary center for sphere in object space.
- Select Sphere: Correct depth sorting of selection points for overlapping
  objects (custom AND Maya ones).
- iQuadric: Detect which element of the parameter matrix changes and enforce
  symmetry based on this (and not the upper triangular matrix).

KNOWN BUGS
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- Negative scaling (at DAG node) of unbound quadric (with set limit)
- Ambient term not handled correctly.

LIBS REQUIRED
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- GLEW (has to build in ./lib/glew for 64 bit systems)


